Characterization of R-curve behavior of translaminar crack growth in cross-ply composite laminates using digital image correlation

被引：21

作者：

Hou, Fang ^{[1
]}

Hong, Soonsung ^{[1
]}

机构：

[1] Michigan State Univ, Dept Mech Engn, E Lansing, MI 48824 USA

来源：

ENGINEERING FRACTURE MECHANICS | 2014年 / 117卷

关键词：

Cross-ply composite laminates; Translaminar fracture; Digital image correlation; Stress intensity factor; R-curve; STRESS INTENSITY FACTOR; FRACTURE-TOUGHNESS; FIELD-MEASUREMENTS; CONSERVATION LAWS; INTERFEROMETRY; ELASTICITY; FAILURE;

D O I：

10.1016/j.engfracmech.2014.01.010

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper presents experimental methods to estimate crack-tip field parameters and characterize R-curve behaviors of translaminar fracture in cross-ply composite laminates using digital image correlation. The investigated crack-tip field parameters include stress intensity factor, energy release rate and effective crack length. The nonlinear least-squares method and conservation integrals are used to determine these parameters from elastic far-field displacements, based on the homogeneous approximation of anisotropic solids for composite laminates. The sources of error of the two parameter-estimation methods are investigated. The results of the two methods show good consistency. Finally, the two-stage rising R-curves are obtained with acceptable accuracy. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：51 / 70

页数：20

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